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| Return on total capital, % |
9.9 |
12.3 |
14.5 |
13.2 |
7.9 |
| Return on capital employed, % |
12.9 |
18 |
21.2 |
19.4 |
13.2 |
| Return on equity, % |
15.7 |
13.7 |
13.8 |
11.7 |
6.8 |
| Operating margin, % |
8.8 |
9.8 |
9.5 |
7.4 |
4.5 |
| Profit margin, % |
6.5 |
7.9 |
9.4 |
8.4 |
5.1 |
| Equity/assets ratio, % |
49.2 |
51 |
66.6 |
67.7 |
66 |
| Debt/equity ratio, times |
0.6 |
0.5 |
0 |
0 |
0 |
| Interest coverage ratio, times |
3.2 |
3.9 |
10.8 |
19.6 |
12.4 |